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From: Christoph Hellwig <hch@lst.de>
To: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: kbusch@kernel.org, hch@lst.de, linux-nvme@lists.infradead.org,
	sagi@grimberg.me
Subject: Re: [PATCH V2 0/2] nvme: replace linked list with xarray for ns tracking
Date: Wed, 1 Jul 2020 07:36:09 +0200
Message-ID: <20200701053609.GA28056@lst.de> (raw)
In-Reply-To: <20200701022517.6738-1-chaitanya.kulkarni@wdc.com>

On Tue, Jun 30, 2020 at 07:25:15PM -0700, Chaitanya Kulkarni wrote:
> Hi,
> 
> This is a small patch-series which replaces ctrl->namespaces with
> xarray for host-core and target-core. We can see following
> performance improvement when running fio with 32 parallel jobs where
> first 16 namespaces and last 16 namespaces are used for I/O. See [1] for
> detailed performance numbers. 

Why would that make any difference given that we don't look up namespaces
in the I/O path?

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Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-01  2:25 Chaitanya Kulkarni
2020-07-01  2:25 ` [PATCH V2 1/2] nvme-core: use xarray for ctrl " Chaitanya Kulkarni
2020-07-01 13:12   ` Christoph Hellwig
2020-07-01 16:44     ` Keith Busch
2020-07-01 18:19     ` Chaitanya Kulkarni
2020-07-01 18:29       ` Keith Busch
2020-07-01 18:40         ` Chaitanya Kulkarni
2020-07-01  2:25 ` [PATCH V2 2/2] nvmet: use xarray for ctrl ns storing Chaitanya Kulkarni
2020-07-01  6:08   ` Christoph Hellwig
2020-07-01 18:36     ` Chaitanya Kulkarni
2020-07-01  5:36 ` Christoph Hellwig [this message]
2020-07-01 13:21   ` [PATCH V2 0/2] nvme: replace linked list with xarray for ns tracking Keith Busch
2020-07-01 16:49     ` Sagi Grimberg
2020-07-01 18:43       ` Chaitanya Kulkarni
2020-07-01 18:41     ` Chaitanya Kulkarni
2020-07-01 18:41   ` Chaitanya Kulkarni

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